Nucleation in A/B/AB blends: Interplay between microphase assembly and macrophase separation
文献类型：期刊论文
| 作者 | Wang, Jiafang1,2; Mueller, Marcus2; Wang, Zhen-Gang3 |
| 刊名 | JOURNAL OF CHEMICAL PHYSICS
 |
| 出版日期 | 2009-04-21 |
| 卷号 | 130期号:15 |
| 关键词 | Colloids Drops Emulsions Free Energy Nucleation Phase Separation Polymer Blends |
| ISSN号 | 0021-9606 |
| DOI | 10.1063/1.3105340 |
| 英文摘要 | We study the interplay between microphase assembly and macrophase separation in A/B/AB ternary polymer blends by examining the free energy of localized fluctuation structures (micelles or droplets), with emphasis on the thermodynamic relationship between swollen micelles (microemulsion) and the macrophase-separated state, using self-consistent field theory and an extended capillary model. Upon introducing homopolymer B into a micelle-forming binary polymer blend A/AB, micelles can be swollen by B. A small amount of component B (below the A-rich binodal of macrophase coexistence) will not affect the stability of the swollen micelles. A large excess of homopolymer, B, will induce a microemulsion failure and lead to a macrophase separation. Between the binodal and the microemulsion failure concentration, macrophase separation in A/B/AB occurs by a two-step nucleation mechanism via a metastable microemulsion droplet of finite size. Our results illustrate a recently proposed argument that the two-step nucleation via a metastable intermediate is a general phenomenon in systems involving short-range attraction and long-range repulsion. |
| 语种 | 英语 |
| WOS记录号 | WOS:000265486300041 |
| 出版者 | AMER INST PHYSICS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/67161]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Jiafang |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Gottingen, Inst Theoret Phys, D-37077 Gottingen, Germany 3.CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA |
| 推荐引用方式 GB/T 7714 | Wang, Jiafang,Mueller, Marcus,Wang, Zhen-Gang. Nucleation in A/B/AB blends: Interplay between microphase assembly and macrophase separation[J]. JOURNAL OF CHEMICAL PHYSICS,2009,130(15). |
| APA | Wang, Jiafang,Mueller, Marcus,&Wang, Zhen-Gang.(2009).Nucleation in A/B/AB blends: Interplay between microphase assembly and macrophase separation.JOURNAL OF CHEMICAL PHYSICS,130(15). |
| MLA | Wang, Jiafang,et al."Nucleation in A/B/AB blends: Interplay between microphase assembly and macrophase separation".JOURNAL OF CHEMICAL PHYSICS 130.15(2009). |
入库方式： OAI收割
来源：化学研究所
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